// Copyright 2016 Microsoft, Inc. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
author: Brian Terlson <brian.terlson@microsoft.com>
esid: sec-async-function-instances-length
description: >
  Async functions have a length property that is the number of expected
  arguments.
includes: [propertyHelper.js]
---*/

function Test() {
    async function l0() {}
    async function l1(a) {}
    async function l2(a, b) {}
    assert.sameValue(l0.length, 0);
    assert.sameValue(l1.length, 1);
    assert.sameValue(l2.length, 2)

    verifyNotWritable(l0, 'length');
    verifyNotEnumerable(l0, 'length');
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_TEST; i++) {
    Test();
}
